Related Clues:

• A way off and on
• Use an old-fashioned phone
• Intensify, with "up"
• Water skier's apparatus
• Entry method
• Place a call
• Push-button precursor
• Evel aid
• Increase, with "up"
• Intensify, with 'up'
• Parking garage part
• Thing a host might warn you not to touch, after 'that'
• Panel reading
• I-XII place, perhaps
• Timely face